package com.woke.method;

import java.security.MessageDigest;

public class Md5jarss {

    /**
     * @return
     */

    public final static String get32MD5(String s) {
        char hexDigits[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
        try {
            byte[] strTemp = s.getBytes();
            MessageDigest mdTemp = MessageDigest.getInstance("MD5");
            mdTemp.update(strTemp);
            byte[] md = mdTemp.digest();
            int j = md.length;
            char str[] = new char[j * 2];
            int k = 0;
            for (int i = 0; i < j; i++) {
                byte b = md[i];
                //System.out.println((int)b);
                str[k++] = hexDigits[b >> 4 & 0xf];
                str[k++] = hexDigits[b & 0xf];
            }
            return new String(str);
        } catch (Exception e) {
            return null;
        }
    }

    public static String getMD5EncryptedStr(String str) {
        String decode = get32MD5("sp_");//88china thinkphp  C('DB_PREFIX') 数据库前缀为sp_
        String mi = get32MD5(str);
        return decode.substring(0, 12) + mi + decode.substring(decode.length() - 4, decode.length());
    }

}
